한국수소및신에너지학회논문집 (Transactions of the Korean hydrogen and new energy society)

  • 제30권6호
  • /
  • Pages.531-539
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  • 2019
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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전극촉매의 내구성 향상을 위한 지지체 특성 평가 연구

A Study on Characteristics of Supports Materials for Durability Improvement of Electrocatalysts

  • 장정윤 (한국에너지기술연구원 연료전지연구실) ;
  • 임성대 (한국에너지기술연구원 연료전지연구실) ;
  • 박석희 (한국에너지기술연구원 연료전지연구실) ;
  • 정남기 (충남대학교 에너지과학기술대학원) ;
  • 박구곤 (한국에너지기술연구원 연료전지연구실)
  • JANG, JEONGYUN (Fuel Cell Laboratory, Korea Institute of Energy Research) ;
  • YIM, SUNG-DAE (Fuel Cell Laboratory, Korea Institute of Energy Research) ;
  • PARK, SEOK-HEE (Fuel Cell Laboratory, Korea Institute of Energy Research) ;
  • JUNG, NAMGEE (Graduate School of Energy Science and Technology, Chungnam National University) ;
  • PARK, GU-GON (Fuel Cell Laboratory, Korea Institute of Energy Research)
  • 투고 : 2019.10.11
  • 심사 : 2019.12.30
  • 발행 : 2019.12.30
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초록

The development of cost-effective electrocatalysts with high durability is one of the most important challenges for the commercialization of polymer electrolyte fuel cells (PEFCs). The durability of the electrocatalyst has been studied in terms of structural change in the active metal and the support. In particular, in fuel cell vehicles, degradation of the carbon-based support is known to have a significant effect on the electrocatalyst deterioration since the start-up/shut-down cycle is frequently repeated. The requirements for the support of the electrocatalyst include high surface area, electrical conductivity, chemical stability, and so on. In this study, we propose the evaluation methods for choosing better support materials and present the physicochemical properties that promising carbon supports should have. Three kinds of carbon materials with different crystallinity are compared. From in-depth study using X-ray diffraction, Raman spectroscopy, thermogravimetric analysis, and accelerated stress test, it is clearly confirmed that the durability of carbon-supported electrocatalysts is closely related to the physicochemical properties of the carbon supports.

키워드

참고문헌

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